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  2. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    The Charrière is measured by the ''outer'' diameter, and is defined as 1 Fr = 1/3 mm, and thus 1 mm = 3 Fr; therefore the diameter of a round catheter in millimetres can be determined by dividing the French size by 3. [2] The French units roughly correspond to the outer circumference of the catheter (see table below).

  3. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    [2] [3] 1:1250: 0.244 mm: Ship models: The dominant European size for die-cast ship models, most comprehensive range. 1:1200: 0.01 0.254 mm: Ship models: A British and American size for ship and harbour models. Airfix used to produce in this scale. 1:1000: 0.305 mm This is a scale used in Germany for pre-finished airliner models.

  4. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    Metric (SI) units. 25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to ⁠ 1 36 ⁠ yard or ⁠ 1 12 ⁠ of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate ...

  5. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property ...

  6. Shoe size - Wikipedia

    en.wikipedia.org/wiki/Shoe_size

    A child's size zero is equivalent to 4 inches (a hand = 12 barleycorns = 10.16 cm), and the sizes go up to size 13 + 1 ⁄ 2 (measuring 25 + 1 ⁄ 2 barleycorns, or 8 + 1 ⁄ 2 inches (21.59 cm)). Thus, the calculation for a children's shoe size in the UK is:

  7. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 34 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  8. Clothing sizes - Wikipedia

    en.wikipedia.org/wiki/Clothing_sizes

    The B fitting adds 12 cm and the T height modifier 4 cm to the base hip measurement 89 + 16 = 105 cm. [14] Additionally there are a set of age based waist adjustments, such that a dress marketed at someone in their 60s may allow for a waist 9 cm larger than a dress, of the same size, marketed at someone in their 20s. The age based adjustments ...

  9. U.S. standard clothing size - Wikipedia

    en.wikipedia.org/wiki/U.S._standard_clothing_size

    The most common size category. For women of about average height (5 ft 4 in) with an average bust height and an hourglass figure. Dress sizes may be given as girth at the bust in inches (e.g., 36), but even-numbered sizes from 2 to 16 are more common. Categorical sizes range from XS (extra-small) to XL (extra-large).